Purification of aqueous glyoxal solutions

Details Purification of aqueous glyoxal solutions Purification of aqueous glyoxal solutions

1989-12-11

1991-03-19

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204131, 2041823, 568492, B01D 1302

Patent

active

050008323

ABSTRACT:
Aqueous glyoxal solutions which contain organic acids are purified by means of a membrane cell comprising two or more compartments by passing the glyoxal solution through at least one of the cell compartments separated from the neighboring compartment(s) by anion exchange membranes and by passing the aqueous solution of a base through at least one of the neighboring compartments.

REFERENCES:
patent: 3165415 (1965-01-01), Kilburn et al.
patent: 3270062 (1966-08-01), Merz et al.
patent: 3507764 (1970-04-01), Asahi et al.
patent: 3860656 (1975-01-01), McCain, Jr. et al.
patent: 4521632 (1985-06-01), Wickenhaeuser et al.
patent: 4781809 (1988-11-01), Falcone, Jr.
Chemical Abstracts, vol. 94, No. 4, Jan. 26, 1981, p. 354, Zusammenfassung Nr. 20979v.

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